This study employed four waves of Institute of Education Sciences nationally representative data to investigate changes in K-12 technology and engineering education teachers in terms of demographics, qualifications, and service loads over time through the 2007-2008 and 2011-2012 Schools and Staffing Surveys and the 2015-2016 and 2017-2018 National Teacher and Principal Surveys. Gender, age, teaching experience, race, employment status, certification status, certification pathway, teacher placement, educational level, student caseload, categorical student caseload, limited English proficiency caseload, and service load were examined. Most of the characteristics that were examined experienced a modest degree of movement over time.